package com.aaa.forum.common;

import com.fasterxml.jackson.annotation.JsonInclude;

/**
 * 统一返回结果
 * @param <T>
 */
public class AppResult<T> {

    // 状态码
    @JsonInclude(JsonInclude.Include.ALWAYS)
    private int code;
    // 描述信息
    @JsonInclude(JsonInclude.Include.ALWAYS)
    private String message;
    // 具体的数据
    @JsonInclude(JsonInclude.Include.ALWAYS)
    private T data;

    // 因为设置了值为null, 就不进行json序列化, 为了返回结果统一格式, 加上 @JsonInclude(JsonInclude.Include.ALWAYS)
    // 加上这个注解后, 就是指为null, 也会进行json序列化, 返回给前端统一的格式

    // 构造方法
    public AppResult(int code, String message) {
        this(code, message, null);
    }

    public AppResult(int code, String message, T data) {
        this.code = code;
        this.message = message;
        this.data = data;
    }

    // 成功
    public static AppResult success () {
        return new AppResult(ResultCode.SUCCESS.getCode(), ResultCode.SUCCESS.message);
    }

    // 成功, 自定义描述信息
    public static AppResult success(String message) {
        return new AppResult(ResultCode.SUCCESS.getCode(), message);
    }

    // 成功, 带有 data 数据
    public static <T> AppResult<T> success(T data) {
        return new AppResult<>(ResultCode.SUCCESS.getCode(), ResultCode.SUCCESS.getMessage(), data);
    }

    // 成功, 自定义描述信息, 带有 data 数据
    public static <T> AppResult<T> success(String message, T data) {
        return new AppResult<>(ResultCode.SUCCESS.getCode(), message, data);
    }

    // 失败
    public static AppResult failed () {
        return new AppResult(ResultCode.FAILED.getCode(), ResultCode.FAILED.getMessage());
    }

    // 失败, 自定义描述信息
    public static AppResult failed (String message) {
        return new AppResult(ResultCode.FAILED.getCode(), message);
    }

    public static AppResult failed (ResultCode resultCode) {
        return new AppResult(resultCode.getCode(), resultCode.getMessage());
    }

    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public T getData() {
        return data;
    }

    public void setData(T data) {
        this.data = data;
    }
}
